EP0477614B1 - Digitale Teilnehmerleitungseinheit für den Anschluss von Teilnehmerendgeräten an eine digitale Fernsprechvermittlungsstelle - Google Patents
Digitale Teilnehmerleitungseinheit für den Anschluss von Teilnehmerendgeräten an eine digitale Fernsprechvermittlungsstelle Download PDFInfo
- Publication number
- EP0477614B1 EP0477614B1 EP91114938A EP91114938A EP0477614B1 EP 0477614 B1 EP0477614 B1 EP 0477614B1 EP 91114938 A EP91114938 A EP 91114938A EP 91114938 A EP91114938 A EP 91114938A EP 0477614 B1 EP0477614 B1 EP 0477614B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- subscriber line
- subscriber
- line modules
- digital
- terminals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
Definitions
- Digital subscriber line unit for connecting subscriber terminals to a digital telephone exchange
- the invention relates to a digital subscriber line unit for connecting subscriber terminals to a digital one Telephone exchange according to the preamble of Claim 1.
- Such a digital subscriber line unit is accordingly Groups of subscriber terminals of a digital system integrating Message network (ISDN subscriber terminals) assigned.
- ISDN subscriber terminals Message network
- the subscriber line assemblies of such digital subscriber line units are based on the type of to be connected Tailored subscriber terminals, namely whether it is analog subscriber terminals or subscriber terminals a digital system-integrated message network, the so-called ISDN network, i.e. around ISDN subscriber terminals acts.
- the ISDN subscriber terminals that have a so-called basic connection require are for the transfer from and to the Exchange two user channels with 4 kbit / s each (B channels) and a signaling channel with 16 kbit / s (D channel) for the Signaling between subscriber and operator available posed.
- the subscriber line module for the connection of ISDN subscriber terminals has the main task, the ISDN basic connections to be completed on the exchange side in accordance with standards and both the user data as well as the signaling data via the forward the intended routes to the exchange.
- This task includes the connection-specific Switching through the B-channel information for selected time slots on exchange-side PCM multiple lines.
- the so-called D-channel treatment takes place, which implemented the D channel signaling in the format used in the exchange as well as a Decoupling packet data from the D channel does not as with a likewise pursued concept, decentralized to the Subscriber line modules, but through a central D-channel treatment facility (see "Second IEE National Conference On Telecommunications ", April 2, 1989, York, GB, pages 190 to 195; Section 5.4 and Figure 8 ff .; G. Geiger et al).
- D-channel treatment leads to one Reduction of effort and in terms of comparison changes in B-channel treatment that occur more frequently Changes in D-channel treatment due to the large number of subscriber line modules within a digital Subscriber line unit overall also to a considerable extent Cost reduction.
- the D-channel treatment Decentralized implementation is suggested several of the subscriber line modules for Summarize ISDN subscriber terminals via a distribution facility, the connection of the exchange-side Speech signal outputs and inputs on a common with the Exchange connecting bus causes.
- the object of the invention is a concept for a specify digital subscriber line unit by which it is possible based on the circumstances of subscriber line units with decentralized D-channel treatment into one digital subscriber line unit with central D-channel treatment with as few changes to components as possible to come that doesn't functionally from the concept change are affected.
- Another embodiment of the invention relates to a also already existing structure of the subscriber line unit into a base unit and an expansion unit and the case that the digital subscriber line unit Subscriber line module for both ISDN subscribers as well as for analog participants includes.
- a digital Time division switching center VST a switching network SN, a coordination processor CP, a controller for the network of central Signaling channels CCNC and line trunk groups LTG shown the interface between the digital switching network SN and the digital or analog environment of the exchange as well a digital subscriber line unit DLU shown on the the invention relates.
- DLU TL digital subscriber line unit
- the digital subscriber line unit DLU includes double controllers DLUC0 and DLUC1 as well as interface units DIUD0 and DIUD1, which work with the subscriber line modules are connected via double bus lines.
- the Interface units DIU0 and DIU1 carry double PCM lines PCM to two of the LTG connection modules mentioned. It can thus be seen that the digital subscriber line units DLU to which a large number of subscriber lines or Subscriber terminals are connected, a concentration on makes the two pairs of PCM lines mentioned PCM.
- FIG 1 also shows, the digital subscriber line units DLU also sold by the exchange VST be arranged.
- FIG. 2 shows the digital subscriber line unit DLU 1 shows a number of subscriber line modules SLMD for the connection of ISDN subscriber terminals, one of the controls DLUC, one of the interface units DIU, and one Distribution device BDE shown, which is still discussed becomes.
- FIG 2 shows, are to a subscriber line module SLMD eight subscriber lines or subscriber terminals connected, or eight basic connections BA0 to BA7 available.
- the interface functions to the subscriber line, IEC components, which effect echo cancellation, and an EPIC component which responsible for processing the B channels, i.e. the voice channels is and thereby a time slot allocation on the voice bus SB0 between the subscriber line module and the distribution unit BDE causes.
- a microprocessor is ⁇ P1 shown that the block EPIC in the course of the mentioned time slot assignment controls.
- D-channel information is kept unchanged Distribution device BDE supplied, or one according to the invention there arranged device DCH for D-channel treatment of the whole Group or the two groups of subscriber line modules SLMD operating under the control of a microprocessor ⁇ P2 stands.
- DCH D-channel treatment of the whole Group or the two groups of subscriber line modules SLMD operating under the control of a microprocessor ⁇ P2 stands.
- a line DL is used, which in the previous concept had served the transmission of packet data in the course the D-channel treatment within the subscriber line modules had been separated from the D channel's tax information.
- This line was part of a collision bus, with whose help controls access to a sum p-channel, in which the packet data of a large number of ISDN subscribers be retransmitted.
- This bus is still in the CB Interface unit DIU looped back, but now begins only in the distribution device BDE, namely on the output side of the The DCH facility for D-channel treatment now provided there.
- the packet data is superimposed on the sum p channel now from here via the OR gate ODP to the between the Distribution device BDE and the interface unit Voice bus SB1.
- the base unit includes Subscriber line modules centrally required units, such as the mentioned control DLUC as well as a clock generator, against the expansion unit only subscriber line modules as well as distribution devices BDE.
- Subscriber line modules centrally required units such as the mentioned control DLUC as well as a clock generator
- the expansion unit only subscriber line modules as well as distribution devices BDE.
- the subscriber line modules for the connection of the analog subscriber terminals in the base unit, whereas the expansion unit only subscriber line modules for the connection of ISDN subscriber terminals contains.
- the required wiring changes are in this Trap particularly small.
Description
- FIG 1
- ein Übersichtsblockschaltbild, aus dem die Zu- bzw. Einordnung der erfindungsgemäßen digitalen Teilnehmerleitungseinheit zu einer bzw. in eine digitale Zeitmultiplexvermittlungsstelle hervorgeht.
- FIG 2
- derjenige Teil einer solchen digitalen Teilnehmerleitungseinheit, den die Erfindung betrifft.
Claims (2)
- Digitale Teilnehmerleitungseinheit für den Anschluß von Teilnehmerendgeräten an eine digitale Fernsprechvermittlungsstelle mit einer Mehrzahl von Teilnehmeranschlußbaugruppen, die Gruppen von Teilnehmerendgeräten eines digitalen systemintegrierenden Nachrichtennetzes (ISDN-Teilnehmerendgeräten) zugeordnet sind, wobei Teilnehmeranschlußbaugruppen (SLMD) verwendet werden, die gegenüber Teilnehmeranschlußbaugruppen, in denen neben der Durchschaltung der einem ISDN-Teilnehmerendgerät jeweils zur Verfügung stehenden beiden Nutzkanäle (B-Kanäle) die Behandlung des einem solchen Teilnehmerendgerät darüber hinaus zur Verfügung stehenden Signalisierungskanals (D-Kanal) erfolgt, im Hinblick auf einen Wegfall der dezentralen D-Kanal-Behandlung und der Vornahme einer zentralen D-Kanal-Behandlung aufbau- und funktionsmäßig reduziert sind, dadurch gekennzeichnet, daß unter weitgehender Beibehaltung der Verdrahtungsanschlüsse einer Verteilereinrichtung (BDE), über die die vermittlungsseitigen Sprachsignalaus- und -eingänge der Teilnehmeranschlußbaugruppen auf einen gemeinsamen weiterführenden Sprachbus geschaltet werden, diese Verteilereinrichtung um Einheiten (DCH, µP2) zur gemeinsamen D-Kanal-Behandlung der Gesamtheit der D-Kanäle der an die Gruppe von Teilnehmeranschlußbaugruppen (SLMD) angeschlossenen ISDN-Teilnehmerendgeräte erweitert ist, wobei diese D-Kanäle über den durch Verzicht auf eine individuelle D-Kanal-Behandlung in den Teilnehmeranschlußbaugruppen (SLMD) freigewordene Busverbindung (DL) an die Verteilereinrichtung (BDE) gelangen.
- Digitale Teilnehmerleitungseinheit nach Anspruch 1, die in eine Basiseinheit und in eine Erweiterungseinheit gegliedert ist, dadurch gekennzeichnet, daß nur die Erweiterungseinheit Teilnehmeranschlußbaugruppen für ISDN-Teilnehmerendgeräte enthält und dementsprechend nur die Teilnehmeranschlußbaugruppen und die Verteilereinrichtung dieser Erweiterungseinheit in der genannten Weise ausgebildet sind, wogegen die Basiseinheit nur Teilnehmeranschlußbaugruppen für den Anschluß analoger Teilnehmerendgeräte enthält.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4030604 | 1990-09-27 | ||
DE4030604 | 1990-09-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0477614A2 EP0477614A2 (de) | 1992-04-01 |
EP0477614A3 EP0477614A3 (en) | 1993-01-13 |
EP0477614B1 true EP0477614B1 (de) | 1999-02-24 |
Family
ID=6415113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91114938A Expired - Lifetime EP0477614B1 (de) | 1990-09-27 | 1991-09-04 | Digitale Teilnehmerleitungseinheit für den Anschluss von Teilnehmerendgeräten an eine digitale Fernsprechvermittlungsstelle |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0477614B1 (de) |
AT (1) | ATE176980T1 (de) |
DE (1) | DE59109101D1 (de) |
ES (1) | ES2130128T3 (de) |
GR (1) | GR3030230T3 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19711321C1 (de) * | 1997-03-18 | 1998-09-10 | Siemens Ag | Teilnehmeranschlußkonzentrator |
-
1991
- 1991-09-04 ES ES91114938T patent/ES2130128T3/es not_active Expired - Lifetime
- 1991-09-04 DE DE59109101T patent/DE59109101D1/de not_active Expired - Fee Related
- 1991-09-04 AT AT91114938T patent/ATE176980T1/de active
- 1991-09-04 EP EP91114938A patent/EP0477614B1/de not_active Expired - Lifetime
-
1999
- 1999-05-14 GR GR990401317T patent/GR3030230T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
DE59109101D1 (de) | 1999-04-01 |
EP0477614A3 (en) | 1993-01-13 |
EP0477614A2 (de) | 1992-04-01 |
ATE176980T1 (de) | 1999-03-15 |
ES2130128T3 (es) | 1999-07-01 |
GR3030230T3 (en) | 1999-08-31 |
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